1169173128 has 64 divisors (see below), whose sum is σ = 2992619520. Its totient is φ = 380475200.

The previous prime is 1169173123. The next prime is 1169173141. The reversal of 1169173128 is 8213719611.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1169173123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552793 + ... + 554903.

It is an arithmetic number, because the mean of its divisors is an integer number (46759680).

Almost surely, 2^1169173128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1169173128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496309760).

1169173128 is an abundant number, since it is smaller than the sum of its proper divisors (1823446392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1169173128 is a wasteful number, since it uses less digits than its factorization.

1169173128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658 (or 2654 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The square root of 1169173128 is about 34193.1737047031. The cubic root of 1169173128 is about 1053.4799513722.

The spelling of 1169173128 in words is "one billion, one hundred sixty-nine million, one hundred seventy-three thousand, one hundred twenty-eight".